# import sys
# from importlib.resources import files
#
# str = sys.stdin.readline()
# print(str)
#
#
# num=input("请输入第一个数字：")
# print(num)
#
# sys.stdout.write('hello')
# print('world')

# file=open('a.txt','r',buffering=1)
# print(file.read())
# file.close()
#
# with open('a.txt','r',encoding='utf-8',buffering=1) as file2:
    # print(file2.readline())
    # print(file2.readline())
    # print(file2.readlines())
with open('a.txt','w',encoding='utf-8',buffering=1) as file3:
    file3.write('hello')